Fix quoting bug TODO state change code.

In a recent patch,  I forgot to quote a new variable in an expression
which tests if the variable is bound.  This has been fixed now.

lisp/ChangeLog

@@ -1,5 +1,8 @@
 2008-11-03  Carsten Dominik  <dominik@science.uva.nl>
 
+	* org.el (org-todo): Quote
+	`org-agenda-headline-snapshot-before-repeat'.
+
 	* org-exp.el (org-export-as-html): Fully process link descriptions.
 	(org-export-html-format-desc): New function.
 	(org-export-as-html): Collect footnotes into the correct basket.

lisp/org.el

@@ -7963,7 +7963,7 @@ For calling through lisp, arg is also interpreted in the following way:
 	(put-text-property (point-at-bol) (point-at-eol) 'org-todo-head head)
 	;; Do we need to trigger a repeat?
 	(when now-done-p
-	  (when (boundp org-agenda-headline-snapshot-before-repeat)
+	  (when (boundp 'org-agenda-headline-snapshot-before-repeat)
 	    ;; This is for the agenda, take a snapshot of the headline.
 	    (save-match-data
 	      (setq org-agenda-headline-snapshot-before-repeat